Sure! Attached is a screenshot of the broken thumbnails, these are being modified with a 3 vector, I wasn’t touching any of the textures.
For the tweaking the material layer until it breaks updating, I wasn’t seeing this in the material instance UI, but just in the normal material editor. I was messing with ways to pack roughness and a normal map in the same texture just to see if it could be plausibly done with the new system, and all of a sudden the engine just stopped caring about me connecting or disconnecting nodes when I applied the changes.
Glad to be able to help!
Is there a difference between that and what I’ve done here (this is the quick dirt layer I made for this new system)? I’m not sure if there’s a drawback to doing it this way, obviously I can just change it to the get/set/blend nodes if they work better.